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Side-by-side: what they do, what they cost, what Kai actually thinks. Pass up to 4 tools via ?tools=claude,chatgpt,gemini.
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S
Suno
S
Hex
A
Lex
A
TaglineRun any open-source AI model with an API call.Prompt to full song with vocals, instruments, the works.Modern data notebook with Magic AI assistant.Google Docs with an AI collaborator baked in.
Categorydev platformaudiodatawriting
PricingPay per second of computeFree + $10/mo + $30/moFree + $28+/user/moFree + $12/mo
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Jingles, intros, demos, sketches, personal use.Data teams at startups + enterprises.Essays, long-form drafts, thinking on the page.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Real songs with real lyrics
  • v4 is very good
  • Quick turnaround
  • SQL + Python + no-code in one notebook
  • Magic AI writes queries + viz for you
  • Team-grade collaboration
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Copyright gray zone
  • Audio quality behind studio
  • Overkill for casual users
  • Enterprise pricing
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
Kai's verdictS-tier for open-source model APIs. The default in this space.S-tier in its category. The first AI music tool I'd actually listen to.A-tier for data teams. S-tier if you already live in SQL + Python.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.
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